The preferred propagation method for showy lily is tuber division in spring. It has a moderate propagation difficulty. Signs of successful propagation include new shoot emergence. Ensure proper tuber handling to avoid damage.

Gray alder propagates through hardwood cuttings, layering (air), and sowing seeds. These methods are easiest in autumn and winter. Propagation difficulty varies by method, but look for signs of successful propagation such as new growth and root formation. Key tips include using rooting hormone and keeping the soil moist.

False aralia is best propagated through cuttings in the spring and summer months. This plant has a moderate difficulty level for propagation, with successful propagation indicated by new leaf growth. Ensure proper moisture levels for optimal results.

For proper propagation of queen palm, sow seeds ideally during Spring, as it ensures the highest success rate. Though not difficult, monitor for emerging seedlings as a sign of successful propagation. Keep the growing medium moist throughout the process.

Red columbine can be propagated ideally in Spring through sowing. The process is moderately easy, and successful signs include vigorous seedling growth. It is important to maintain adequate moisture and warmth for optimum germination.

Leatherleaf mahonia propagates best through cuttings during the spring and summer months. This propagation technique can be moderately difficult, with successful growth indicated by new foliage emergence. For optimal success, maintain consistent humidity and warmth.

A cherished ornamental, tree peony, thrives when propagated by division. This method capitalizes on the plant's natural growth habit by separating the mature clumps, ensuring each division has several buds for optimal growth. Carefully executed during its dormancy, division requires sharp, sterile tools to prevent damage and disease. Prioritize immediate replanting to foster robust root systems, providing a nurturing environment rich in organic matter and with proper drainage to support vigorous development.

Chinese evergreen's propagation is best during Spring and Summer via cutting. The process is moderately easy with successful propagation indicated by new foliage growth. Ensure optimal humidity and temperature conditions for better results.